A summer swim in the harbour
Yet only 15 years ago a swim in the harbour of large Danish cities would have been impossible because the water was polluted to the extent that it posed a health risk. As a result of a long-term effort by local municipalities, you can now swim in the water nearby center of more Danish cities.
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Cool kids swimming in winter
Throughout the cold Danish winter, a group of 7- to 12-year-olds clench their jaws and dive into the ice-cold water at Amager Beach, just a few kilometers from Copenhagen city center. They are just some of the thousands of Danes who enjoy the popular activity of winter swimming.
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There are more than 25,000 organized winter bathers in more than 93 clubs in Denmark. In addition, there are also many that winter bath without being a member of a club. In the past, the average age for a winter bather was 40 years, whereas today many of the new members are under 30 years of age.
Sources
http://www.badesikkerhed.dk/en/adults/winter-bathing/
http://www.netpublikationer.dk/um/focusdk_0415/Html/kap03.html
Focus Denmark No. 04, Ministry of Foreign Affairs of Denmark, Summer — autumn 2015, available at http://www.netpublikationer.dk/um/focusdk_0415/index.html
EUROPEA Denmark